Bulletin 1756 ControlLogix® Redundancy Modules support 
fully redundant controller architectures with no additional programming required. Programs are cross-loaded automatically from the primary to the secondary controller. The primary automatically updates the secondary with data changes to maintain controller synchronization. If the primary fails, control switches to the secondary automatically, and highest priority functions are guaranteed a ‘bumpless transfer.' Controller redundancy is transparent to any devices connected over an EtherNet/IP™ or ControlNet™ network. Select the ControlLogix extreme environment redundancy module for applications that must run in extreme environments
GuardLogix Safety Controllers overview
Features
- Provide twice the processing speed in the L7 models when compared to the L6 models
- Provide safety and integrated motion in the same chassis
- Offer TÜV certification for SIL 3 functional safety (controller and safety partner required)
- Support Integrated Motion on EtherNet/IP™, integrated Sercos™ motion, and analog motion
- Support safety communications via EtherNet/IP, ControlNet, and DeviceNet™ networks
- Require no setup for automatically-configured safety partner
- Support removal and insertion under power (RIUP)
- Support multiple controllers in the same chassis, with each one operating independently
- Let you program using relay ladder logic, structured text, function block, and SFC languages
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Offer flexible user memory options
Products
- 1756 GuardLogix® L7 & L6 Safety Controllers
GuardLogix Safety Controller Comparison
| Feature | L7 Models | L6 Models |
|---|---|---|
| Performance Capability | Twice the performance of L6 models | High |
| Max. Controller Connections | 500 | 250 |
| Built-in Port | USB | Serial |
| Energy Storage Module (ESM) Included | Yes | No |
| Battery Required | No | Yes |
| On-board Display Included | Yes | No |
| Supported in Studio 5000™ Environment | Yes | No |
| Non-volatile Memory | SecureDisc card | CompactFlash card |
| Max. User Memory | 8 MB | 8 MB |
| Max. I/O Points | 128,000 digital; 4,000 analog | 128,000 digital; 4,000 analog |
| I/O Module Integration | ControlLogix® I/O, CompactBlock™ Guard™ I/O, ArmorBlock® Guard I/O, POINT Guard I/O | ControlLogix® I/O, CompactBlock™ Guard™ I/O, ArmorBlock® Guard I/O, POINT Guard I/O |
Certifications
- GuardLogix Safety Controllers, L7 models: c-UL-us, CE, C-Tick, ATEX, KC, FM, TÜV
- GuardLogix Safety Controllers, L6 models: c-UL-us, CSA, CE, C-Tick, ATEX, KC, FM, TÜV
